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3 years ago

A calcium atom lost 2 electrons in order to become more stable. It now has electrons and a charge of.

Chemistry

1 answer:

Sergeu [11.5K]3 years ago

3 0

18 electrons with a charge of +2

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Write the balanced electrochemical reaction for when zinc reacts with a copper solution. Label what is being oxidized and what i

Fed [463]

The balanced equation would be $Zn + Cu^{2+} ---- > Cu + Zn^{2+}$

<h3>Electrochemical equations</h3>

Zn reacts with Cu solution according to the following equation:

$Zn + Cu^{2+} ---- > Cu + Zn^{2+}$

In the reaction, $Cu^{2+}$ is reduced according to the following: $Cu^{2+} + 2 e^- -- > Cu$

While Zn is oxidized according to the following: $Zn - 2e^- --- > Zn^{2+}$

Thus, giving the overall equation of; $Zn + Cu^{2+} ---- > Cu + Zn^{2+}$

More oxidation-reduction equations can be found here: brainly.com/question/13699873

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2 years ago

What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)?

vova2212 [387]

Idk what is is i am sorry

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2 years ago

Which of the following occurs in this system?

earnstyle [38]

Answer:

Hence option C is correct.

Explanation:

the process is osmosis a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

so the answer for the this question will be There is a net flow of water from the 4% starch solution into the 10% starch solution because solvent (water) moving from low conc. (4 %) to high conc. (10%)

Hence option C is correct.

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3 years ago

A piece of wood that measures 2.7 cm x 5.5 cm x 3.9 cm has a mass of 84 g what is the density of the wood

Korolek [52]

The density of the wood : 1.45 g/cm³

<h3>Further explanation </h3>

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density

The unit of density can be expressed in g/cm³ or kg/m³

Density formula:

$\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}$

ρ = density

m = mass

v = volume

Volume of the wood

$\tt V=2.7\times 5.5\times 3.9=57.915~cm^3$

density

$\tt \rho=\dfrac{m}{V}\\\\\rho=\dfrac{84~g}{57.915~cm^3}=\boxed{\bold{1.45`g/cm^3}}$

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3 years ago

Composition variable

Brrunno [24]

Answer:

c. Substance

Explanation:

A composition variable is an intensive property that indicates the relative amount of a particular species or substance in a phase.

5 0

3 years ago

Read 2 more answers

A calcium atom lost 2 electrons in order to become more stable. It now has ____electrons and a charge of____.

A calcium atom lost 2 electrons in order to become more stable. It now has electrons and a charge of.